Gyratory and Cone Crusher
01/01/2016 · Primary crushers are solidly built to receive large lumps of rock directly from the mines and designed for large tonnage throughputs. Basically, gyratory crushers consist of a fixed solid conical shell or bowl (also called concaves) and a solid cone within the bowl called a breaking head (Figure ).The breaking head is fixed to a central spindle, which is hydraulically suspended or ...